DRAWING ANGLES WITH SET SQUARES

V. Ryan © 2008

 Set squares are used in conjunction with T-squares to draw accurate angles. There are two main types of set square. One has an angle of 45 degrees and the other 30/60 degree angles. PDF FILE - CLICK HERE FOR PRINTABLE EXERCISE CLICK HERE FOR FLASH ANIMATION OF SET SQUARES The 45 degree set square also has a 90 degree angle. This can be used for drawing vertical lines. The 30/60 degree set square also has a 90 degree angle. This set square can be used to draw 30, 60 or 90 degrees angles. Set squares are only accurate if they are used along with a T-square. The set square must rest on the T-square which should be pushed against the edge of the board. If the T-square is not right against the edge of the board (if there are even small gaps) lines drawn at an angle will not be accurate. CLICK HERE FOR FLASH ANIMATION OF SET SQUARES CLICK HERE FOR HTML ANIMATION OF SET SQUARES Common errors when using T-squares and set squares are that gaps are allowed to develop between the T-square and the edge of the board or the set square and the T-square. This leads to inaccurate drawing with angles being incorrect. Set up a piece of A4 paper on a drawing board using a T-square to ensure the paper positioned correctly. Use clips to fix the paper to the board. Draw a border and title block with the title being 30 DEGREES ANGLES. Place the title at the top of the page as well, in larger BLOCK CAPITALS. Draw a number of lines at 30 degrees and then ‘flip’ the set square round to draw 30 degree lines in the opposite direction. CLICK HERE FOR FLASH ANIMATION OF DRAWING 30 DEGREE LINES CLICK HERE FOR HTML ANIMATION OF DRAWING 30 DEGREE LINES Draw a number of lines at 60 degrees and then ‘flip’ the set square round to draw 60 degree  lines in the opposite direction. CLICK HERE FOR FLASH ANIMATION OF DRAWING 60 DEGREE LINES CLICK HERE FOR HTML ANIMATION OF DRAWING 60 DEGREE LINES Adjustable set squares allow a range of angles to be drawn accurately. They can be adjusted to a variety of angles which means only one set square is required. It must still be used by resting accurately on a T-square. CLICK HERE FOR FLASH ANIMATION OF ADJUSTABLE SET SQUARE CLICK HERE FOR HTML ANIMATION OF ADJUSTABLE SET SQUARE CLICK HERE FOR GRAPHICS INDEX PAGE Web www.technologystudent.com